- Used the work from @knight1219 (Daniel Mathews) as the basis.

* Fixed the unit tests so that they are now passing.
Note: This is my first real introduction to Moq, so there are probably a few things that can be improved.

Changes:
* Had a few issues with the mock logger, ended up adding a LoggerFactory and Logger implementation to work around this issue (for some reason the mock logger was never called and the unit tests failed because the string builder was never updated).
* Accommodated changes to the SignInManager, UserManager where the latest version has added Logging to constructor
* SecurityStamp functions in UserManager now check for null and throws an exception, so the unit tests can no longer call GetSecurityStampAsync before its set. Line 866: https://github.com/dotnet/aspnetcore/blame/605c522fa3e875fd6d3aefa783a71d1745b7e4c7/src/Identity/Extensions.Core/src/UserManager.cs
* SignInManager.RefreshSignInAsync has changed the internal method from s.SignInAsync to SignInWithClaimsAsync

sample/MongoIdentitySample.Mvc/Startup.cs

@@ -53,10 +53,10 @@ namespace MongoIdentitySample.Mvc
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env) //, ILoggerFactory loggerFactory)
         {
-            loggerFactory.AddConsole(Configuration.GetSection("Logging"));
-            loggerFactory.AddDebug();
+            //loggerFactory.AddConsole(Configuration.GetSection("Logging"));
+            //loggerFactory.AddDebug();
 
             if (env.IsDevelopment())
             {
@@ -68,17 +68,23 @@ namespace MongoIdentitySample.Mvc
                 app.UseExceptionHandler("/Home/Error");
             }
 
+            app.UseRouting();
             app.UseStaticFiles();
-
-            app.UseIdentity();
-
+            
+            app.UseAuthentication();
+            app.UseAuthorization();
             // Add external authentication middleware below. To configure them please see https://go.microsoft.com/fwlink/?LinkID=532715
 
-            app.UseMvc(routes =>
+            //app.UseMvc(routes =>
+            //{
+            //    routes.MapRoute(
+            //        name: "default",
+            //        template: "{controller=Home}/{action=Index}/{id?}");
+            //});
+
+            app.UseEndpoints(endpoints =>
             {
-                routes.MapRoute(
-                    name: "default",
-                    template: "{controller=Home}/{action=Index}/{id?}");
+                endpoints.MapDefaultControllerRoute();
             });
         }
     }